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대학생의 불확실성에 대한 인내력 부족이 진로미결정에 미치는 영향: 부적응적 완벽주의와 경험회피의 순차적 매개효과
윤정미,강민철,조희은,김형란 한국웰니스학회 2020 한국웰니스학회지 Vol.15 No.2
This study was conducted to examine how college students' intolerance of uncertainty affected their indecisiveness in choosing a career while identifying the sequential mediation impact of maladaptive perfectionism and the avoidance of experience. We resultingly performed a questionnaire targeting 413 male and female students, currently attending a 4-year university located in Gyeonggi-do, and incorporated a total of 324 responses during the analysis process. Correlations between the variables were examined by correlation analysis, and the sequential mediation impact of maladaptive perfectionism and the avoidance of experience as it pertains to the relationship between intolerance of uncertainty and the indecisiveness in choosing a career were identified through structural equation modeling According to the results, it was revealed that intolerance of uncertainty, career indecisiveness, maladaptive perfectionism, and the avoidance of experience had a significant correlation overall. In addition, the sequential mediation impact of maladaptive perfectionism and the avoidance of experience were found statistically significant in terms of the effect of intolerance of uncertainty on career indecisiveness. Finally, we also discussed this study's significance and limitations. 본 연구는 대학생의 불확실성에 대한 인내력 부족이 진로미결정에 미치는 영향에 대해 알아보고, 부적응적 완벽주의와 경험회피의 순차적 매개효과에 대해 확인하고자 하였다. 이를 위해 경기도에 소재한 4년제 대학에 재학 중인 남녀 학생 413명을 대상으로 설문 조사하였고 총 324명의 응답 결과를 분석에 사용하였다. 각 변인들 간의 관계를 상관분석을 통해 검토하였으며, 불확실성에 대한 인내력 부족과 진로미결정의 관계에서 부적응적 완벽주의와 경험회피의 순차적 매개효과를 구조방정식 모형검증을 통해 확인하였다. 분석결과에 따르면, 불확실성에 대한 인내력 부족이 진로미결정에 미치는 영향에 있어 완벽주의와 경험회피의 순차적 매개효과가 통계적으로 유의미하게 나타났다. 끝으로 본 연구의 의의와 제한점에 대해 논하였다.
용탕단조법에 의해 제조된 Mg-6AI-xZn(x0,1,2)합금의 기계적 성질에 미치는 시효처리의 영향
강민철,윤일성,김경현,김인배,Gang, Min-Cheol,Yun, Il-Seong,Kim, Gyeong-Hyeon,Kim, In-Bae 한국재료학회 1997 한국재료학회지 Vol.7 No.2
용탕단조법에 의해 제조된 Mg-6AI-xZn(x=0,1,2)합금의 기계적 성질에 미치는 시효열처리의 영향을 조사하였다. 주조상태에서의 미세조직은 초정 Mg고용체, 과포화된 상태의 Mg상, 응고과정에서 형성된 $\beta(Mg_{17}AI_{12}$)화합물 등 3개의 상으로 구성되어 있었다. 용체화처리 수 $200^{\circ}C$및 $240^{\circ}C$에서 시효열처리한 결과 Mg-6AI-xZn(x=0,1,2)합금은 $\beta$ 석출물에 의한 피크 경도값이 나타났으며, 석출물의 형태는 $200^{\circ}C$에서는 lamella 형태의 불연속 석출물이, $240^{\circ}C$에서는 미세분산분포된 연속석출물의 형태를 보였다. 용탕단조방법에 의해 제조된Mg-6AI-xZn합금의 기계적 성질은 사형주조법에 비해 인장강도 및 연신율에서 우수한 특성을 보였으며 Zn의 첨가량이 증가함에 따라 Zn의 고용강화 효과에 따라 강도값이 증가되었다. This study has investigated the effects of aging treatment on thc nlechanical propcrries of blg-iiAl-x%nix - 0.1.2) alloys fabricated by the squeeze castmg process. The microstructurcs of as-squeeze cast were composed of pro eurectic $\alpha$ magnesium solid solution, super saturated $\alpha$ solid solution and $\beta(Mg_{17}AI_{12}$) compund. Agcd at both $200^{\circ}C$ and $240^{\circ}C$, Mg--6AixZn alloys showed the peak hardness due to the formation of $\beta(Mg_{17}AI_{12}$) precipitates. The tiiscontinuous precipitates of the lamella r\.pe are predominant at $200^{\circ}C$ aging tredrment. tvhilc. the finely dispersed continu ous precipitates were major type at $240^{\circ}C$ treatment. Mg-- GAI-xZn a1loi.s fabricated hy the squeeze casting process had the hetter combination of tensile strength and elongation compared to the conventionally cast alloys. As increascci zinc: contents. the tensile strength was increased 11y the soiid solutirin strengthening effect of zinc,.
COL3A1 유전자의 새로운 돌연변이 c.2931+2dupT가 확인된 혈관형 엘러스-단로스 증후군 1례
윤유민,김동찬,강민재,Yoon, You Min,Kim, Dong Chan,Kang, Min Jae 대한유전성대사질환학회 2014 대한유전성대사질환학회지 Vol.14 No.2
혈관형 엘러스-단로스 증후군은 상염색체 우성 유전질환으로 COL3A1 유전자의 돌연변이로 인해 제 3형 콜라겐 합성이 결핍되면서 피부, 관절, 혈관, 폐, 내장 등에서 증상이 나타나는데 생명에 위협이 되는 합병증인 동맥 파열이나 장 천공과 같이 발생한 뒤에 진단이 늦게 내려지는 경우가 많다. 본 증례는 11세에 장천공 및 복막염의 수술력이 있는 16세 남아가 각각 운동과 경미한 손상 이후 발생한 두 차례의 근혈종으로 내원하여 시행한 COL3A1 유전자 검사에서 새로운 돌연변이 c.2931+2dupT가 발견되어 보고하는 바이다. Vascular Ehlers-Danlos syndrome (vEDS) is an autosomal dominant disorder caused by a mutation of the type III collagen (COL3A1). The manifestation of vEDS can be seen in skin, joints, blood vessels, and internal organs. The diagnosis of vEDS often is missed until the patient presents with a life-threatening complication such as spontaneous arterial rupture or bowel perforation. We report a 16-year-old male who had recurrent right thigh hematoma after simple exercise and minor trauma, respectively. He had a history of surgery due to spontaneous colon perforation at his age of 11 years. Gene test of COL3A1 revealed a novel mutation c.2931+dupT.
용탄단조법에 의해 제조된 Mg-6Al-xZn(x=0 , 1 , 2) 합금의 용체화처리조건 규명
강민철,윤일성,김인배 ( Min Cheol Kang,Il Sung Yoon,In Bae Kim ) 한국열처리공학회 1996 熱處理工學會誌 Vol.9 No.4
This study has been investigated the influence of solid solution treatment on the microstructure of Mg-6Al-xZn(x=0, 1, 2) alloys fabricated by squeeze casting process. The products having clean surface and fine microstructure are fabricated by adopting the liquid metal forging method. The microstructures of as-fabricated state show β(Mg_(17)Al_(12)) precipitates between the dendrite boundaries. It is found that the hardness of the alloys is increased with increasing amount of zinc due to the solid solution hardening effect of zinc. In the changes of microstructure upon solid solution treatment time at 405℃, β phases are dissolved in α matrix up to 1hr and the microstructure are coarsened rapidly after 2hrs. The microhardness are decreased rapidly until lhr of solution treatment time and then stabilized. From the above results, it is concluded that the optimum solid solution treatment condition for Mg-6Al-xZn alloys is at 405℃ for 1hr. The solution treatment time is greatly reduced comparing to conventional casting(at 385∼418℃ for 10∼14hrs) due to the formation of the super-saturated solid solution by liquid metal forging.
영유아 탑승자의 차량사고에서 보호장구에 따른 손상 분석
성강민 ( Kang Min Sung ),김상철 ( Sang Chul Kim ),전혁진 ( Hyuk Jin Jeon ),곽영수 ( Yeong Soo Kwak ),윤영한 ( Young Han Youn ),이강현 ( Kang Hyun Lee ),박종찬 ( Jong Chan Park ),최지훈 ( Ji Hun Choi ) 대한외상학회 2015 大韓外傷學會誌 Vol.28 No.3
Purpose: To compare injury sustained and severity of child occupant according to the types of safety restraint systems in motor vehicle crashes. Methods: This was a retrospective observational study. The study subjects were child occupants under the age of 8 years who visited a local emergency center following a motor vehicle crash from 2010 to 2014. According to safety restraint: child restraint systems (CRS), belted, and unbelted, we compared injuries sustained and injury severity using the maximal Abbreviated Injury Scale (MAIS) and Injury Severity Score (ISS), and analyzed the characteristics of severe injuries (AIS2+). Results: Among 241 subjects, 9.1% were restrained in CRS, 14.5% were only belted, and 76.3% was unbelted at the time of the crashes. Fourteen had severe injuries (AIS2+), all of whom didn’t be restrained by CRS. Injuries in face and neck were the highest in unbelted group, and MAIS and ISS were the lowest in CRS group. Conclusion: Among safety restraint systems for child occupant in motor vehicle crashes, the CRS have the preventive effect of face and neck injuries, and are the most effective safety restraint systems. [ J Trauma Inj 2015; 28: 98-103 ]
모바일 디스플레이 디지털 인터페이스용 저전력 고속 수신기 회로의 설계
이천효,김정훈,이재형,김려연,윤용호,장지혜,강민철,이용진,하판봉,김영희,Lee, Cheon-Hyo,Kim, Jeong-Hoon,Lee, Jae-Hyung,Jin, Liyan,Yin, Yong-Hu,Jang, Ji-Hye,Kang, Min-Cheol,Li, Long-Zhen,Ha, Pan-Bong,Kim, Young-Hee 한국정보통신학회 2009 한국정보통신학회논문지 Vol.13 No.7
본 논문에서는 모바일 디스플레이 디지털 인터페이스용 저전력 고속 수신기 회로를 제안하였다. 새롭게 제안된 저전력 수신기 회로는 바이어스 전류인 싱크 전류와 소스 전류를 공급전압, 공정, 온도 및 공통 모드 입력 전압의 변 동에 대해 둔감하도록 설계되었다. 3.0V${\sim}$3.6V의 전원전압과 -40${\sim}$85$^{\circ}$C의 온도에서 450Mbps 이상의 고속 데이터 수신이 가능하다. 그리고 모의 실험결과 소모전류는500${\mu}$A 이하이다. 테스트 칩은 매그나칩 0.35${\mu}$m CMOS 공정을 이용하여 제작되었으며, 테스터 결과 데이터 수신기 회로와 데이터 복원 회로가 정상적으로 동작하는 것을 확인하였다. We propose a low-power and high-speed client receiver for a mobile display digital interface (MDDI) newly in this paper. The low-power receiver is designed such that bias currents, sink and source currents, are insensitive to variations of power supply, process, temperature, and common-mode input voltage (VCM) and is able to operate at a rate of 450Mbps or above under the conditions of a power supply range of 3.0 to 3.6Vand a temperature range of -40 to 85$^{\circ}$C. And it is confirmed by a simulation result that the current dissipation is less than 500${\mu}$A. A test chip is manufactured with the Magna chip 0.35${\mu}$m CMOS process. When a test was done, the data receiver and data recovery circuits are functioning normally.
신봉철(B. C. Shin),하석재(S. J. Ha),강민형(M. H. Kang),허영무(Y. M. Heo),윤길상(G. S. Yoon),조명우(M. W. Cho) 한국소성·가공학회 2009 소성가공 : 한국소성가공학회지 Vol.18 No.2
Recently, the monitoring technology of machining process is very important to improve productivity and quality in manufacturing filed. Such monitoring technology has been performed to measurement using vibration signal, acoustic emission signal and tool dynamometer. However, micro machining is limited small-scale parts machining because micro tool is very small and weakness to generate signal in micro machining process. Therefore, this study has efficient sensing technology for real monitoring system in micro machine that is proposed to supplement a disadvantage of single-sensor by multi sensor. From experimental result, it was evaluated tool wear and cutting situation according to repetitive slot cutting condition and changing cutting condition, and it was performed monitoring spindle rpm and condition according to compare acceleration signal with current signal.
입원한 지역사회획득 폐렴 환자에서 요중 레지오넬라항원 검사를 통해 본 Legionella Pneumophila 감염의 비중
송홍석 ( Song Hong Seog ),서지현 ( Seo Ji Hyeon ),안종호 ( An Jong Ho ),윤병인 ( Yun Byeong In ),이승준 ( Lee Seung Jun ),이명구 ( Lee Myeong Gu ),전만조 ( Jeon Man Jo ),강민종 ( Kang Min Jong ),이재명 ( Lee Jae Myeong ),김동규 ( 대한결핵 및 호흡기학회 2001 Tuberculosis and Respiratory Diseases Vol.50 No.4